Summary Integrated interpretation of reflected and scattered waves in complex geological section of ancient platform. The special aspects of seismic data interpretation were considered in terms of geological section folded by ancient sediments. The connection of destruction zones with hydrocarbons deposits were shown and mapped to the scattered waves field of CSP method by example of East Siberia fields. CSP method makes it possible to map the heterogeneities of scattered waves field at greater depths. Integrated interpretation of reflected and scattered waves in complex geological section of the ancient platform gives good results due to using additional information, which is not normally taken into account.

Fractured reservoirs are prospecting targets for oil deposit exploration. The research is based on ingenious method of prestack migration called FractureCSP. The work presents multifunctional surface small-aperture technology of microseismic monitoring that is designed for hydrofracturing, fluid injection and other geologic technical procedures control, as well for the revelation of reservoir fault block structures in interwell space during long-term passive microseismic observation. Presented are the integrated interpretation results predicting open fracturing zones in prospecting and exploration well locations.

Small Microseismic Surface Acquisition System for oilfield monitoring is presented. Algorithms for data processing are based on the mathematical theory of inverse problems and the using of the supercomputer calculations. A distinctive feature of the suggested system is high mobility, compactness and universality. The technology based on the this acquisition system is intended not only for hydraulic fracturing monitoring but also for long-duration passive monitoring of fluid injection, for hydrocarbon drainage area estimation and for oilfield block structure mapping. Case Study has more than 50 examples.

Summary The Compact Surface Microseismic Monitoring Technology is represented . The Technology is intended for hydraulic fracture monitoring, fluid injection monitoring and for an assessment of sources of oil deposit. Distinctive feature of this technology is universality, high mobility and compactness of system of registration. The technology uses the original methods of processing of the signals, which allow with high precision to define both kinematic parameters of sources of microseismic events (coordinate), and their dynamic parameters (energy, the directions of the main axes of tension, shift and hydrostatic tension and other). Results of monitoring are visualized both statically in space, and dynamically in time.

Представлены основные принципы геологической интерпретации поля рассеянных волн. На основе анализа разрезов и карт рассеянных волн выполняется прогноз зон распространения трещинно-кавернозных коллекторов. Коллекторы такого типа являются перспективными объектами для поиска залежей нефти. Исследования базировались на оригинальном методе престековой миграции Common Scattering Point (CSP). Метод CSP позволяет получать по данным 3D МОГТ два независимых куба – куб отраженных волн и куб рассеянных волн. Формирование последних происходит в зонах трещиноватости

The problem of oil reservoirs prospecting in the Bazhen formation in the West Siberia is exciting and difficult. Exciting - because the Bazhen formation’s oil reserves are estimated up to 7 billion tons and difficult - due to its fracture-cavernous nature. The results of oil reservoirs forecasting in the Bazhen formation of the Salym oilfield are presented. The forecast is based on using scattered seismic waves extracted from the 3D multichannel seismic data by the original CSP prestack migration method. Shown that this approach enables to obtain much more reliable reservoirs forecasting map and reservoirs model than conventional processing and interpretation methods.

Results of fracture and cavernous reservoirs forecasting using scattered waves extracted from multichannel seismic data are presented. The forecast is based on an original prestack migration method – the Common Scattering Point (CSP) method, which enables constructing two independent seismic cubes: a conventional cube with reflectors and a new cube with diffractors – the image of space distribution of acoustic impedance inhomogeneities. The last are joined with fracture or cavernous zones – strong sources of scattered waves. The method was tested on synthetic data and in areas with oil deposits in carbonate and shale rocks.

Results of geological media exploration using scattered waves extracted from multichannel seismic data are presented. The researches are based on original prestack migration method – Wave CDP method, which possesses possibility to construct two independent time sections: conventional image of reflectors and new image of space distribution of acoustic inhomogeneities - diffractors. The last are join with fracture zones – strong sources of scattered waves. Method was testes in areas with carbonate, volcanic and clay rocks.